There are several resources available for Veterans who are looking for service and support animals. Please note that emotional support animals are not covered by federal laws protecting the use of service animals. 

Dogs 2 DogTags
D2DT creates an opportunity to save at risk, rescued, or donated dogs, train them, and place them with deserving service members who have been diagnosed with post combat stress and anxiety. The purpose is to provide the veteran, at no cost, a trained dog that they can gain a constant companion to help them cope with their unique challenges in everyday life.
Mental Health America
An emotional support animal (ESA) is just what it sounds like—a pet that provides emotional support. ESAs do not need any special training, beyond the normal training a pet needs. In order to get the benefits of an ESA, you will need a “prescription” from a mental health professional. Check out this website for more information on this topic.
Heartland Canines for Veterans
They strive to pair the right canine with the right Veteran.
K9s for Warriors
Determined to end veteran suicide, K9s For Warriors provides highly-trained Service Dogs to military veterans suffering from PTSD, traumatic brain injury and/or military sexual trauma. They claim to be the largest provider of service dogs to Veterans.
K-9's On The Front Line Logo
Jason Howe
Jefferson City, Missouri
K9s on The Front Line is a Maine-based 501(c)(3) nonprofit organization providing certified, trained service dogs to military Veterans who are affected by PTSD and/or TBI, at no cost to our Veterans.
Missouri Patriot Paws
They provide Missouri military Veterans, and First Responders suffering from Post-Traumatic Stress Disorder (PTSD) or Traumatic Brain Injury (TBI) with a trained Service dog, most of these dogs of which will be rescued from local shelters.
Patriot PAWS
The mission of Patriot PAWS Service Dogs is to train and provide service dogs of the highest quality at no cost to disabled American veterans and others with mobile disabilities in order to help restore their physical and emotional independence.
Pups4Patriots
American Humane’s Pups4Patriots program finds dogs in search of forever homes and trains them to be lifesaving service dogs for veterans with Post-Traumatic Stress or Traumatic Brain Injury.
Retrieving Freedom
They match service dogs with Veterans to meet their needs.
APA
Individuals with disabilities may use service animals and emotional support animals for a variety of reasons. This guide provides an overview of how major Federal civil rights laws govern the rights of a person requiring a service animal. These laws, as well as instructions on how to file a complaint, are listed in the last section of this publication. Many states also have laws that provide a different definition of service animal. You should check your state’s law and follow the law that offers the most protection for service animals. The document discusses service animals in a number of different settings as the rules and allowances related to access with service animals will vary according to the law applied and the setting.
VetDogs
VetDogs trains and places service dogs for those with physical disabilities; guide dogs for individuals who are blind or have low vision; service dogs to help mitigate the effects of post-traumatic stress disorder; and facility dogs as part of the rehabilitation process in military and VA hospitals. It costs over $50,000 to breed, raise, train, and place one assistance dog; however, all of VetDogs’ services are provided at no charge to the individual. Funding comes from the generosity of individuals, corporations, foundations, businesses, and community organizations